Hay-baler.



, No. 872,850. PATENTED DEC. 3, 1907.-

F. A. ROWBKAMP.

HAY- BALER.

APPLICATION FILED r113. 28. 1907.

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No. 872,850. PATENTED DEG. 3,1907.

P. A. ROWEKAMP.

HAY BALBR.

. APPLICATION FILED T17R28, 1907.

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awwentoz No. 872,850. I PATENTED DEC. 3 1907. P, A. ROWBKAMP.

HAY BALER.

APPLICATION FILED FEB. 28. 1907.

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III/III! ulllllllllllllmllalllnmllllm Q/Vi in 099% FRANK A. ROWEKAMP, OFWITAKA, MINNESOTA.

HAY-B ALER.

Specification of Letters Patent.

Patented Dec. 3, 1907.

Application filed February 28. 1907- Serial No. 359.873.

To all whom it may concern:

a citizen of the United States, residing at Witaka, in the county ofWinona and State of Minnesota, has invented certain new and usefulImprovements in Hay-B alers, of which the following is a specification.

This invention relates to hay balers' and more particularly to plungersthereof, and has for its object to provide a plunger so arranged as toassume a shape at its inner end when Withdrawn, to facilitate theintroduc tion of hay to the baling chamber.

Another object is to provide a structure of this sort which will be simle and which may be applied to plungers o' balers already in use.

Other objects and advantages will be apparent from the followingdescription, and it will be understood that changes in the specificstructure shown and described may be made within the scope of theclaims, and that any suitable materials may be used, without departingfrom the spirit of the invention.

In the drawings forming a portion of this specification and in whichlike numerals of reference indicate similar parts in the several views:Figure 1 is a view showing a portion of a hay baler provided with thepresent invention, one wall of the baling chamberbeing removed, and theplunger being withdrawn, Fig. 2 is a view similar to Fig. 1 with theplunger in pressing position, Fig. 3' is a top plan of the parts in theposition shown in Fig. 1, both walls of the baling chamber being shown,Fig. 4 is a view of the plunger with the top plate removed, the frontplate being in slanting position, Fig. 5 is a view similar to Fig. 4with the front plate in up right osition. Fig. 6 is a longitudinalsection t ough the plunger.

Referring now to the drawings there is shown a baling chamber includingparallel side walls 7 and 8. A plunger 9 is arranged for movementbetween the walls, in the usual manner, and the inner end of the plungeris slanted downwardly and inwardly, as shown at 10. A recess 11 isformed in the forward end of the plunger, and opens through the upperand under faces.

ongitudinally extending slots 12 are formed in the side walls of therecess 11 and open through the inner end of the plunger, t ese slotsregistering transversely of the plunger and in each of these slots thereis [mounted a lever 13 for horizontal pivotal Be it known that FRANK A.RowEKAMP, l

movement. As shown in the drawings, these leversare movable intoposition to extend longitudinally of the plunger, when they lie withtheir ends 13 projected beyond the innor end of the plunger and withtheir ends 14 in the slots 12. The levers are held normally out of thejust described position, however, by strap springs 15 set in recesses 16in the side faces of the plunger and arranged for engagement of theirfree ends by the end portions 14 of the levers 13 as shown. These endportions 14 thus roject normally beyond the sides of the pfilnger.

A plate 17 is secured to the under face of Y the plunger at the innerend thereof, and closes a portion of the recess 11. plate 18 is hingedat its lower end to the plate 17 for movement into and out of positionto rest against the slanting inner end of A front the plunger, and ahelical spring 19 is secured to this front plate and to the rearwardwall of the recess 11, to hold the plate yieldably in slanting positionand against the inner end of the plunger. The front plate 18, when innormal position, thus lies in the path of movement of the inner ends 13of the levers 13 when the latter are moved into longitudinally extendingposition and these ends of the levers are beveled as at 20, adjacent tothe front plate in order to present a broad bearing surface thereto. Itwill thus be apparent that when the outer ends 14 of levers are movedinwardly to bring the levers into longitudinally extending position, theinner ends of the levers will engage the front plate 18 to move itagainst the action of the spring 19, and the arrangement is such thatthe front plate is thus brought into vertical position.

A top plate 21 is hinged to the upper edge of the front plate 18, andrests upon the upper face of the plunger, this plate being free 13(1)slide with the movement of the front p ate.

It will thus be apparent that when the plunger is moved inwardly tocompress a bale, the levers 13 will be brought into engagement with theside walls 7 and 8 of the ba ing chamber, and moved inwardly to bringthe front plate into vertical position, thus presenting a straight faceagainst the matter to-be compressed. When the plunger has beenretracted, to bring the levers outwardly of the baling chamber, thefront plate will be moved in a diagonal position, to

slant upwardly and outwardly thus presenting wider s ace for theintroduction of material as we as an inclined surface to facilitate suchintroduction. This arrangement insures full acking of matter in theangle between the ower portion of the plunger and the bottom of thebaling chamber which, with the usual form of press is rarely if everfully packed. As shown, the walls 7 and 8 of the baling press arediagonally recessed at 22 to present slanting faces at the points atwhich they are engaged by the levers 13.

What is claimed is:-

1. In a baling press, the combination with a baling chamber and aplunger movable in the chamber, of a front plate pivoted to the innerend of the plunger for movement into and out of vertical position andlevers pivoted in the plunger and arranged for operation to bring thefront plate into vertical position, said levers being disposed forengagement of the walls of the baling chamber for movement when theplunger is moved in the chamber.

2. In a baling press, the combination with a plunger, of a hay-engagingmember connected with the inner end of the plunger for movement to lieat times in diagonal position and at times in vertical position, and alever pivoted in theplunger and arranged for operation to move thehay-engaging member.

3. In a baling press, the combination with a balin chamber and a plungermovable in the ballng chamber, of a front plate pivoted to the innerend'of the plunger for movement into and out of vertical position, andmeans for cooperation with the walls of the baling chamber to move thefront plate into vertical position when the plunger is moved to compressa bale.

4. In a baling press, the combination with a baling chamber and aplunger movable in the chamber, of a front late pivotally connected withthe plunger or movement to lie at times in upwardly and outwardlyslanting position, and at times in vertical position,

means for holding the front plate in slanting osition, and means movableto bring the ont plate into vertical position, said means being arrangedfor engagement of the baling chamber when the plunger is moved tocompress a bale, for movement of said means to bring the front plateinto vertical osition.

5. The combination with a p unger for baling presses of a plate securedto the under face of the plunger, a front plate hinged to the forwardend of the first mentioned plate for movement to extend at times invertical and at times in diagonal position, means for holding the frontplate normally in diagonal position, means for moving the front plateinto vertical position and a top plate hinged to the front plate andresting upon the plunger.

6. The combination with a plunger for baling presses having a slantedinner end and having a recess in said end opening through the upper andlower faces of the plunger, of a plate secured to the under face of theplunger to close the bottom of said recess, a front plate hinged to thefirst mentioned plate for movement toward and away from the slanted endof the plunger, means located in the recess for moving the front plate,and a top plate hinged to the front plate and slidably dis osed upon theplunger to close the upper en of the recess.

In testimony whereof I afliX my signature in presence of two witnesses.

FRANK A. ROWEKAMP.

Witnesses:

D. E. TAWNEY, MAUDE' R. WHITE.

